自然科学研究

玻璃的激光焊接研究现状

陈长军 (苏州大学机电工程学院激光加工中心；哈尔滨工业大学 先进焊接与连接国家重点实验室), 李雷 (苏州大学机电工程学院激光加工中心), 唐建 (苏州大学机电工程学院激光加工中心), 徐梦璇 (苏州大学机电工程学院激光加工中心), 张敏 (苏州大学机电工程学院激光加工中心)

摘要


先进的激光焊接技术应用于焊接玻璃的技术有连续（CW）激光、ns激光和超快（USP）激光进行了综述。采用连续激光焊接玻璃和玻璃的时候，无裂纹的焊缝较难获得，这是因为熔池具有自由的表面。在采用USP激光进行焊接的时候，可以得到无裂纹的玻璃，不管玻璃的热膨胀系数是啥样的，只要玻璃之间的间隙小就行，这是因为超快激光（USP）的非线性吸收过程得到的熔池具有非自由的表面，因此其收缩应力得到了抑制。技术上的努力来增加间隙也一样没有裂纹。USP激光焊接显示异种材料玻璃/金属或玻璃/Si之间的焊接也能通过ns和USP激光焊接来抑制金属（或Si）熔池的飞溅而实现无裂纹焊接。

关键词


激光焊接；热应力；裂纹；熔池；自由表面；光学接触；异种材料焊接；机械性能

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参考


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DOI: https://doi.org/10.33142/nsr.v1i2.14021

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